I stock up on bulky and non refrigerated items from Costco through GSX. Paper towels, cases of Mexican Coke, cereals and snacks, shampoo, and whatnot. It's doub

I stock up on bulky and non refrigerated items from Costco through GSX. Paper towels, cases of Mexican Coke, cereals and snacks, shampoo, and whatnot. It's doubly better that I can use my 2% back Costco membership and get Costco coupon book deals too - like the Frozen bluray for $15-ish the other month. I'd easily pay $3-400/year plus delivery fees to get perishables and alcohol too. I don't use Postmates for this because I don't know what's available at the store, and Amazon is okay but the pricing isn't the best. Instacart is the closest to GSX in terms of convenience but then I can't use my membership, which is a bummer.